java.net.preferIPv4Stack (default: false)
+
{@systemProperty java.net.preferIPv4Stack} (default: false)
If IPv6 is available on the operating system the
underlying native socket will be, by default, an IPv6 socket which
lets applications connect to, and accept connections from, both
@@ -50,7 +50,7 @@ and detail all of these properties.
java.net.preferIPv6Addresses (default: false)
+
{@systemProperty java.net.preferIPv6Addresses} (default: false)
When dealing with a host which has both IPv4
and IPv6 addresses, and if IPv6 is available on the operating
system, the default behavior is to prefer using IPv4 addresses over
@@ -73,12 +73,12 @@ of proxies.
HTTP
The following proxy settings are used by the HTTP protocol handler.
http.proxyHost (default: <none>)
+
{@systemProperty http.proxyHost} (default: <none>)
The hostname, or address, of the proxy server
http.proxyPort (default: 80)
+
{@systemProperty http.proxyPort} (default: 80)
The port number of the proxy server.
http.nonProxyHosts (default: localhost|127.*|[::1])
+
{@systemProperty http.nonProxyHosts} (default: localhost|127.*|[::1])
Indicates the hosts that should be accessed without going
through the proxy. Typically this defines internal hosts.
The value of this property is a list of hosts,
@@ -94,10 +94,10 @@ of proxies.
The following proxy settings are used by the HTTPS protocol handler.
https.proxyHost(default: <none>)
+
{@systemProperty https.proxyHost}(default: <none>)
The hostname, or address, of the proxy server
https.proxyPort (default: 443)
+
{@systemProperty https.proxyPort} (default: 443)
The port number of the proxy server.
The HTTPS protocol handler will use the same nonProxyHosts property as the HTTP protocol.
@@ -105,12 +105,12 @@ of proxies.FTP
The following proxy settings are used by the FTP protocol handler.
ftp.proxyHost(default: <none>)
+
{@systemProperty ftp.proxyHost}(default: <none>)
The hostname, or address, of the proxy server
ftp.proxyPort (default: 80)
+
{@systemProperty ftp.proxyPort} (default: 80)
The port number of the proxy server.
ftp.nonProxyHosts (default: localhost|127.*|[::1])
+
{@systemProperty ftp.nonProxyHosts} (default: localhost|127.*|[::1])
Indicates the hosts that should be accessed without going
through the proxy. Typically this defines internal hosts.
The value of this property is a list of hosts, separated by
@@ -129,26 +129,26 @@ of proxies.
socksProxyHost (default: <none>)
+
{@systemProperty socksProxyHost} (default: <none>)
The hostname, or address, of the proxy server.
socksProxyPort (default: 1080)
+
{@systemProperty socksProxyPort} (default: 1080)
The port number of the proxy server.
socksProxyVersion (default: 5)
+
{@systemProperty socksProxyVersion} (default: 5)
The version of the SOCKS protocol supported by the server. The
default is 5 indicating SOCKS V5, alternatively
4 can be specified for SOCKS V4. Setting the property
to values other than these leads to unspecified behavior.
java.net.socks.username (default: <none>)
+
{@systemProperty java.net.socks.username} (default: <none>)
Username to use if the SOCKSv5 server asks for authentication
and no java.net.Authenticator instance was found.
java.net.socks.password (default: <none>)
+
{@systemProperty java.net.socks.password} (default: <none>)
Password to use if the SOCKSv5 server asks for authentication
and no java.net.Authenticator instance was found.
Note that if no authentication is provided with either the above properties or an Authenticator, and the proxy requires one, then the user.name property will be used with no password.
java.net.useSystemProxies (default: false)
+
{@systemProperty java.net.useSystemProxies} (default: false)
On Windows systems, macOS systems and on Gnome systems it is possible to
tell the java.net stack, setting this property to true, to use
the system proxy settings (both these systems let you set proxies
@@ -158,29 +158,29 @@ of proxies.
http.agent (default: “Java/<version>”)
+
{@systemProperty http.agent} (default: “Java/<version>”)
Defines the string sent in the User-Agent request header in http
requests. Note that the string “Java/<version>” will
be appended to the one provided in the property (e.g. if
-Dhttp.agent=”foobar” is used, the User-Agent header will
contain “foobar Java/1.5.0” if the version of the VM is
1.5.0). This property is checked only once at startup.
http.keepalive (default: true)
+
{@systemProperty http.keepalive} (default: true)
Indicates if persistent connections should be supported. They improve
performance by allowing the underlying socket connection to be reused
for multiple http requests. If this is set to true then persistent
connections will be requested with HTTP 1.1 servers.
http.maxConnections (default: 5)
+
{@systemProperty http.maxConnections} (default: 5)
If HTTP keepalive is enabled (see above) this value determines the
maximum number of idle connections that will be simultaneously kept
alive, per destination.
http.maxRedirects (default: 20)
+
{@systemProperty http.maxRedirects} (default: 20)
This integer value determines the maximum number, for a given request,
of HTTP redirects that will be automatically followed by the
protocol handler.
http.auth.digest.validateServer (default: false)
-http.auth.digest.validateProxy (default: false)
-http.auth.digest.cnonceRepeat (default: 5)
+{@systemProperty http.auth.digest.validateServer} (default: false)
+{@systemProperty http.auth.digest.validateProxy} (default: false)
+{@systemProperty http.auth.digest.cnonceRepeat} (default: 5)
These 3 properties modify the behavior of the HTTP digest authentication mechanism. Digest authentication provides a limited ability for the server to authenticate itself to the client (i.e. @@ -194,7 +194,7 @@ of proxies.
value reduces the computational overhead on both client and server by reducing the amount of material that has to be hashed for each HTTP request. -http.auth.ntlm.domain (default: <none>)
+
{@systemProperty http.auth.ntlm.domain} (default: <none>)
NTLM is another authentication scheme. It uses the
java.net.Authenticator class to acquire usernames and passwords when
they are needed. However NTLM also needs the NT domain name. There are
@@ -224,14 +224,14 @@ successful or not, so that subsequent identical requests will not
have to access the naming service. These properties allow for some
tuning on how the cache is operating.
networkaddress.cache.ttl (default: see below)
+
{@systemProperty networkaddress.cache.ttl} (default: see below)
Value is an integer corresponding to the number of seconds successful
name lookups will be kept in the cache. A value of -1, or any other
negative value for that matter, indicates a “cache forever”
policy, while a value of 0 (zero) means no caching. The default value
is -1 (forever) if a security manager is installed, and implementation
specific when no security manager is installed.
networkaddress.cache.negative.ttl (default: 10)
+
{@systemProperty networkaddress.cache.negative.ttl} (default: 10)
Value is an integer corresponding to the number of seconds an
unsuccessful name lookup will be kept in the cache. A value of -1,
or any negative value, means “cache forever”, while a